CN106112418A - The processing technique of PH stainless steel pump shaft - Google Patents
The processing technique of PH stainless steel pump shaft Download PDFInfo
- Publication number
- CN106112418A CN106112418A CN201610753901.7A CN201610753901A CN106112418A CN 106112418 A CN106112418 A CN 106112418A CN 201610753901 A CN201610753901 A CN 201610753901A CN 106112418 A CN106112418 A CN 106112418A
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- mentioned
- pump shaft
- chromium plating
- mill
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 16
- 239000010935 stainless steel Substances 0.000 title claims abstract description 16
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 37
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 37
- 239000011651 chromium Substances 0.000 claims abstract description 37
- 238000007747 plating Methods 0.000 claims abstract description 34
- 230000032683 aging Effects 0.000 claims abstract description 26
- 238000005242 forging Methods 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 238000007689 inspection Methods 0.000 claims abstract description 10
- 238000006356 dehydrogenation reaction Methods 0.000 claims abstract description 9
- 238000003801 milling Methods 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 238000000227 grinding Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 230000035882 stress Effects 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 230000003746 surface roughness Effects 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 229910001651 emery Inorganic materials 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 3
- 238000003754 machining Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000005482 strain hardening Methods 0.000 abstract description 2
- 229910000734 martensite Inorganic materials 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910001105 martensitic stainless steel Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electroplating Methods And Accessories (AREA)
- Forging (AREA)
Abstract
The present invention relates to the processing technique of a kind of PH stainless steel pump shaft, its comprise the steps: forging, rough turn I, UT inspection, heat treatment, rough turn II, high-temperature aging, half finish turning I, half finish turning II, low temperature aging, repair grind, finish turning I, mill I, line, milling, mill II, flaw detection, chromium plating, dehydrogenation, removal chromium plating protection, mill III, mill IV, finishing, obtain finished product.Pump shaft processing technique of the present invention, work-hardening effect is little, and size distortion is little, and pump shaft accurate to dimension is good, and surface smoothness is high.Finish size inspection controls below 40 DEG C；And working (machining) efficiency is high, and quality is good, can guarantee that the dimensional accuracy of pump shaft and the deformation of morpheme dimensional tolerance are little, meet drawing dimensional requirement and technology requirement.
Description
Technical field
The present invention relates to a kind of pump shaft processing technique, particularly relate to the processing work of a kind of PH stainless steel pump shaft
Skill.
Background technology
0Cr17Ni4Cu4Nb is a kind of typical martensitic precipitation hardening type rustless steel, and its nickel content is relatively low, and martensite turns
Temperature is higher than room temperature, is cooled to room temperature through solid solubility temperature, and its structural transformation is martensite, then through Ageing Treatment, martensitic matrix
In just separate out copper phase, make intensity improve further.Owing to phosphorus content is relatively low, this steel has good machining under solid solution condition
Performance, its corrosivity and solderability are better than martensitic stain less steel.
0Cr17Ni4Cu4Nb corrosion resistance and high temperature oxidation stability are all good, and have excellent resistance to height below 400 DEG C
Temperature mechanical property, therefore it is usually used in making the parts of less than 370 DEG C and requirement has corrosion resistance, wearability, high intensity and height hard
The parts of degree and equipment.
But when making pump shaft with this kind of material, because the intensity of material own is high, good corrosion resistance, but plasticity is poor, and the hottest
Dealing with improperly, life-time service has brittle tendency, is easily generated fatigue, causes axle fracture to lose efficacy.If exist at pump shaft keyway simultaneously
Small slag inclusion or crackle, through long-term operating, axle is easily generated fatigue, and crackle is gradually increased, and causes axle to lose efficacy.
Summary of the invention
The present invention is directed to above-mentioned problems of the prior art, it is provided that adding of a kind of PH stainless steel pump shaft
Work technique, solves the problem that in prior art, pump shaft easy fracture lost efficacy.
Technical scheme comprises the steps:
1, forging, by GB1220-2007 " stainless steel bar " standard configuration molten steel, forging steel ingot, through secondary remelting forging hair
Base；
2, rough turn I: supported by above-mentioned blank centre frame, block axle one end, the end face held that is stuck put down by car, and blank hits the heart
Hole, monolateral allowance 3-4mm of centre bore cylindrical, surface roughness Ra 6.3um；
3, UT inspection: the workpiece after above-mentioned rough turn I is carried out ultrasonic inspection, is performed by JB/T4730 standard；
4, heat treatment: the workpiece after being checked by above-mentioned UT carries out 1040 ± 10 DEG C of solutionizing and processes, shrend, the same stove of test block；
5, rough turn II: by the workpiece card other end after above-mentioned heat treatment, support workpiece with centre frame, the flat end end face that is stuck of car,
Centering, monolateral allowance 1.5-2mm of turning, axial allowance 1mm of each shoulder, roughness Ra 6.3um；
6, high-temperature aging: the workpiece after above-mentioned rough turn II carries out high-temperature aging process, eliminates internal stress, and high-temperature aging processes bar
Part is :+580 ± 10 DEG C, 4h, air cooling；
7, half finish turning I: the workpiece processed by above-mentioned high-temperature aging, blocks one end, pushes up the other end, centre center rest support,
Size turning, threaded circular on request, cylindrical, threaded circular radially allowance 0.6-0.7mm, ride shoulder, undercut, shoulder, empty cutter
Fluted shaft is to by nominal size allowance 0.4-0.5mm；
8, half finish turning II: turn around, repeats operation 7；
9, low temperature aging: the workpiece after above-mentioned half finish turning II carries out low temperature aging process, eliminates internal stress, and low temperature aging processes
Condition is: 350 DEG C ± 10,4h, air cooling；
10, repair and grind: by drawing machining center hole；
11, finish turning I: the above-mentioned workpiece repaiied after grinding car by drawing is gone out screw thread and escape, has the end of Geometrical Tolerance Principle
Face allowance 0.2mm；
12, mill I: by the workpiece cylindrical grinding after above-mentioned finish turning I, at keyway, cylindrical presses nominal size allowance 0.2mm；
13, line: the workpiece after above-mentioned mill I is rule in keyway position；
14, milling: by the workpiece keyseat by drawing after above-mentioned line；
15, mill II: the workpiece after above-mentioned milling is milled to size before chromium plating；
16, PT inspection: the workpiece after above-mentioned mill II is carried out liquid penetration test；
17, chromium plating: the workpiece after above-mentioned flaw detection is carried out chromium plating, it is ensured that finished product chromium coating thickness 0.05-0.08mm, will during chromium plating
Protect at screw thread, escape；
18, dehydrogenation: workpiece after above-mentioned chromium plating is carried out low temperature dehydrogenation；
19, remove chromium plating protection, repair centre bore, beat≤0.05mm to axle；
20, mill III: the workpiece after above-mentioned reparation is milled to size after chromium plating；
21, mill IV: the workpiece after above-mentioned mill III is continued fine grinding, is milled to chromium plating surface roughness Ra1.6um, has form and position tolerance to want
The end face asked, cylindrical with keyway, be milled to drawing requirement；
22, finishing: the workpiece after above-mentioned mill IV is removed machined burrs, cleans, marking, obtains finished product.
Also include alignment procedure: the workpiece after above-mentioned half finish turning II, if any sweep, carries out alignment.
Also include protect step: before chromium plating by keyway, undercut, axle is stretched, threaded portion carries out chromium plating safeguard procedures.
In described step 1, in forging step, forging equipment is 6t electroslag furnace.
In described step 4, heat-treatment furnace is φ 1.8m × 8m shaft furnace.
Lathe used in described step 2, step 5, step 7, step 8, step 11 is: workpiece rotational frequency 130r/min,
Tool in Cutting degree of depth 0.2mm, tool feeding 0.3mm/prn；Cutter: YG8 sharp knife or 75 ° of alloy cutters, the rough turn 40-of the depth of cut
50mm/ turns, and half finish turning 30mm/ turns, and finish turning 5-10mm/ turns.
In described step 12, step 15, step 20, step 21, grinder wheel is white fused alumina emery wheel, rotating speed 50-60r/
min。
Advantages of the present invention effect is as follows:
1, the solutionizing of pump shaft blank processes, it is ensured that the chemical composition of material and mechanical property；
2, pump shaft high-temperature aging and low temperature aging process, it is ensured that eliminate machining stress, stable dimensions, it is ensured that the size essence after processing
Degree；
3, pump shaft Non-Destructive Testing, it is ensured that pump shaft zero defect.
In a word, this pump shaft processing technique, work-hardening effect is little, and size distortion is little, and pump shaft accurate to dimension is good, surface
Highly polished.Finish size inspection controls below 40 DEG C；And working (machining) efficiency is high, and quality is good, can guarantee that the size essence of pump shaft
Degree and the deformation of morpheme dimensional tolerance are little, meet drawing dimensional requirement and technology requirement.
Detailed description of the invention
The present invention passes through specific embodiment, is described in detail technical solution of the present invention as follows.
Embodiment
Comprise the steps:
1, forging, by GB1220-2007 " stainless steel bar " standard configuration molten steel, forging steel ingot, through secondary remelting forging hair
Base；
2, rough turn I: supported by above-mentioned blank centre frame, block axle one end, the end face held that is stuck put down by car, and blank hits the heart
Hole, monolateral allowance 3-4mm of centre bore cylindrical, surface roughness Ra 6.3um；
3, UT inspection: the workpiece after above-mentioned rough turn I is carried out ultrasonic inspection, is performed by JB/T4730 standard；
4, heat treatment: the workpiece after being checked by above-mentioned UT carries out 1040 ± 10 DEG C of solutionizing and processes, shrend, the same stove of test block；
5, rough turn II: by the workpiece card other end after above-mentioned heat treatment, support workpiece with centre frame, car is flat by firmly end face, beats
Centre bore, monolateral allowance 1.5-2mm of turning, axial allowance 1mm of each shoulder, roughness Ra 6.3um；
6, high-temperature aging: the workpiece after above-mentioned rough turn II carries out high-temperature aging process, eliminates internal stress, and high-temperature aging processes bar
Part is :+580 ± 10 DEG C, 4h, air cooling；
7, half finish turning I: the workpiece that above-mentioned high-temperature aging was processed, card one end, push up the other end, centre center rest support, press
Require size turning, threaded circular, cylindrical, threaded circular radially allowance 0.6-0.7mm, ride shoulder, undercut, shoulder, undercut
Axially by nominal size allowance 0.4-0.5mm；
8, half finish turning II: turn around, repeats operation 7；
9, low temperature aging: the workpiece after above-mentioned half finish turning II carries out low temperature aging process, eliminates internal stress, and low temperature aging processes
Condition is: 350 DEG C ± 10,4h, air cooling；
10, repair and grind: by drawing machining center hole；
11, finish turning I: the above-mentioned workpiece repaiied after grinding car by drawing is gone out screw thread and escape, has the end of Geometrical Tolerance Principle
Face allowance 0.2mm；
12, mill I: by the workpiece cylindrical grinding after above-mentioned finish turning I, at keyway, cylindrical presses nominal size allowance 0.2mm；
13, line: the workpiece after above-mentioned mill I is rule in keyway position；
14, milling: by the workpiece keyseat by drawing after above-mentioned line；
15, mill II: the workpiece after above-mentioned milling is milled to size before chromium plating；
16, PT inspection: the workpiece after above-mentioned mill II is carried out liquid penetration test；
17, chromium plating: the workpiece after above-mentioned flaw detection is carried out chromium plating, it is ensured that finished product chromium coating thickness 0.05-0.08mm, will during chromium plating
Protect at screw thread, escape；
18, dehydrogenation: workpiece after above-mentioned chromium plating is carried out low temperature dehydrogenation；
19, remove chromium plating protection, repair centre bore, beat≤0.05mm to axle；
20, mill III: the workpiece after above-mentioned reparation is milled to size after chromium plating；
21, mill IV: the workpiece after above-mentioned mill III is continued fine grinding, is milled to chromium plating surface roughness Ra1.6um, has form and position tolerance to want
The end face asked, cylindrical with keyway, be milled to drawing requirement；
22, finishing: the workpiece after above-mentioned mill IV is removed machined burrs, cleans, marking, obtains finished product.
Also include alignment procedure: the workpiece after above-mentioned half finish turning II, if any sweep, carries out alignment.
Also include protect step: before chromium plating by keyway, undercut, axle is stretched, threaded portion carries out chromium plating safeguard procedures.
Described dehydrogenation step is carried out in one day after chromium plating.
In described step 1, in forging step, forging equipment is 6t electroslag furnace.
In described step 4, heat-treatment furnace is φ 1.8m × 8m shaft furnace.
Lathe used in described step 2, step 5, step 7, step 8, step 11 is: workpiece rotational frequency 130r/min,
Tool in Cutting degree of depth 0.2mm, tool feeding 0.3mm/prn；Cutter: YG8 sharp knife or 75 ° of alloy cutters, the rough turn 40-of the depth of cut
50mm/ turns, and half finish turning 30mm/ turns, and finish turning 5-10mm/ turns.
In described step 12, step 15, step 20, step 21, grinder wheel is white fused alumina emery wheel, rotating speed 50-60r/
min。
Claims (8)
1. the processing technique of a PH stainless steel pump shaft, it is characterised in that comprise the steps:
Step 1, forging, by GB1220-2007 " stainless steel bar " standard configuration molten steel, forging steel ingot, through secondary remelting forging
Blank；
Step 2, rough turn I: supported by above-mentioned blank centre frame, block axle one end, the end face held that is stuck put down by car, and blank hits
Central hole, monolateral allowance 3-4mm of centre bore cylindrical, surface roughness Ra 6.3um；
Step 3, UT check: the workpiece after above-mentioned rough turn I is carried out ultrasonic inspection, perform by JB/T4730 standard；
Step 4, heat treatment: the workpiece after being checked by above-mentioned UT carries out 1040 ± 10 DEG C of solutionizing and processes, shrend, the same stove of test block；
Step 5, rough turn II: by the workpiece card other end after above-mentioned heat treatment, support workpiece with centre frame, the flat end end that is stuck of car
Face, centering, monolateral allowance 1.5-2mm of turning, axial allowance 1mm of each shoulder, roughness Ra 6.3um；
Step 6, high-temperature aging: the workpiece after above-mentioned rough turn II carries out high-temperature aging process, eliminate internal stress, at high-temperature aging
Reason condition is :+580 ± 10 DEG C, 4h, air cooling；
Step 7, half finish turning I: the workpiece processed by above-mentioned high-temperature aging, block one end, pushes up the other end, and centre centre frame props up
Support, size turning, threaded circular on request, cylindrical, threaded circular radially allowance 0.6-0.7mm, ride shoulder, undercut, shoulder, sky
Cutter fluted shaft is to by nominal size allowance 0.4-0.5mm；
Step 8, half finish turning II: turn around, repeat operation 7；
Step 9, low temperature aging: the workpiece after above-mentioned half finish turning II carries out low temperature aging process, eliminate internal stress, low temperature aging
Treatment conditions are: 350 DEG C ± 10,4h, air cooling；
Step 10, repair and grind: by drawing machining center hole；
Step 11, finish turning I: the above-mentioned workpiece repaiied after grinding car by drawing is gone out screw thread and escape, has Geometrical Tolerance Principle
End face allowance 0.2mm；
Step 12, mill I: by the workpiece cylindrical grinding after above-mentioned finish turning I, at keyway, cylindrical presses nominal size allowance 0.2mm；
Step 13, line: the workpiece after above-mentioned mill I is rule in keyway position；
Step 14, milling: by the workpiece keyseat by drawing after above-mentioned line；
Step 15, mill II: the workpiece after above-mentioned milling is milled to size before chromium plating；
Step 16, PT check: the workpiece after above-mentioned mill II is carried out liquid penetration test；
Step 17, chromium plating: the workpiece after above-mentioned flaw detection is carried out chromium plating, it is ensured that finished product chromium coating thickness 0.05-0.08mm, chromium plating
Time protect at screw thread, escape；
Step 18, dehydrogenation: workpiece after above-mentioned chromium plating is carried out low temperature dehydrogenation；
Step 19, remove chromium plating protection, repair centre bore, beat≤0.05mm to axle；
Step 20, mill III: the workpiece after above-mentioned reparation is milled to size after chromium plating；
Step 21, mill IV: the workpiece after above-mentioned mill III is continued fine grinding, is milled to chromium plating surface roughness Ra1.6um, have morpheme public
End face that difference requires, with the cylindrical of keyway, be milled to drawing requirement；
Step 22, finishing: the workpiece after above-mentioned mill IV is removed machined burrs, clean, marking, obtain finished product.
The processing technique of a kind of PH stainless steel pump shaft the most according to claim 1, it is characterised in that also include
Alignment procedure: the workpiece after above-mentioned half finish turning II, if any sweep, carries out alignment.
The processing technique of a kind of PH stainless steel pump shaft the most according to claim 1, it is characterised in that also include
Protection step: before chromium plating by keyway, undercut, axle is stretched, threaded portion carries out chromium plating safeguard procedures.
The processing technique of a kind of PH stainless steel pump shaft the most according to claim 1, it is characterised in that described step
In rapid 1, in forging step, forging equipment is 6t electroslag furnace.
The processing technique of a kind of PH stainless steel pump shaft the most according to claim 1, it is characterised in that described step
In rapid 4, heat-treatment furnace is φ 1.8m × 8m shaft furnace.
The processing technique of a kind of PH stainless steel pump shaft the most according to claim 1, it is characterised in that described
Lathe used in step 2, step 5, step 7, step 8, step 11 is: workpiece rotational frequency 130r/min, the Tool in Cutting degree of depth
0.2mm, tool feeding 0.3mm/prn；Cutter: YG8 sharp knife or 75 ° of alloy cutters, the rough turn 40-50mm/ of the depth of cut turns, half finish turning
30mm/ turns, and finish turning 5-10mm/ turns.
The processing technique of a kind of PH stainless steel pump shaft the most according to claim 1, it is characterised in that described
In step 12, step 15, step 20, step 21, grinder wheel is white fused alumina emery wheel, rotating speed 50-60r/min.
The processing technique of a kind of PH stainless steel pump shaft the most according to claim 1, it is characterised in that described
Step 18 dehydrogenation step is carried out in one day after chromium plating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610753901.7A CN106112418B (en) | 2016-08-30 | 2016-08-30 | The processing technology of PH stainless steel pump shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610753901.7A CN106112418B (en) | 2016-08-30 | 2016-08-30 | The processing technology of PH stainless steel pump shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106112418A true CN106112418A (en) | 2016-11-16 |
| CN106112418B CN106112418B (en) | 2019-03-29 |
Family
ID=57272120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610753901.7A Active CN106112418B (en) | 2016-08-30 | 2016-08-30 | The processing technology of PH stainless steel pump shaft |
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| Country | Link |
|---|---|
| CN (1) | CN106112418B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107553061A (en) * | 2017-09-28 | 2018-01-09 | 贵州航天电子科技有限公司 | A kind of processing method of austenite stainless steel part |
| CN109290744A (en) * | 2018-10-30 | 2019-02-01 | 安徽东升达精密机件有限公司 | A kind of shaft and shaft processing method |
| CN109693082A (en) * | 2018-12-31 | 2019-04-30 | 枞阳县中邦科技信息咨询有限公司 | A kind of manufacturing method of pump shaft of centrifugal pump |
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| CN109693082A (en) * | 2018-12-31 | 2019-04-30 | 枞阳县中邦科技信息咨询有限公司 | A kind of manufacturing method of pump shaft of centrifugal pump |
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| Publication number | Publication date |
|---|---|
| CN106112418B (en) | 2019-03-29 |
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